Filling guiding and tension mechanism for loom shuttles



Nov. 27, 1923. 1,475,919

T. E. NORMAN FILLING'GUIDING AND TENSION MECHANISM FOR LOOM SHUTTLESFiled Aug. 11. 1922 mmmmmlmmmlmulmlllf \nve nTor. Thomas ENormanPatented Nov. 27,1923;

adapted to 40 THOMAS E. NORMAN, 0] FALL RIVER, MASSAGH'U'SETTS.

ultimo G IDING am) 'rnn'srou Mncnanism FOB-L001!!! SHUTTLES.

Application filed August 11, 1922. Serial No. 581,269..

To all whom it may concern:

"Be it known that I, THOMAS E. NORMAN, a citizen of'the United States,and resident of Fall River, county of Bristol, State of Massachusetts,have invented an Improvement in Filling Guiding and Tension Mechanismfor Loom Shuttles, of which the following description, in connectionwith the accompanying drawing, is a specification, like characters onthe drawing representing like parts, i This invention relatestoimprovements in tension mechanism for loom shuttles and the principalobject of the invention is to provide a simplified tension device whichwill exert a proper tension upon the filling as it is drawn from thefilling carrier through the delivery eye of the shuttle and willdispense with the use of felt, flannel and springactuated devices or thelike which have heretofore been generally employed.

More particularly the invention consists in providing a tension member,preferably in the form ofa bar, crossing the thread passage whichcommunicates with the filling carrier chamber and the delivery eye ofusual forms of hand threading or automatically threading loom shuttlescombined with automatically threading guiding means located' fore andaft of said transverse tension member for .roducing a substantiallyvertical bight and abrupt lateral bend in the filling which will exert adesired tension upon particularly designed for use in connection withhard, twisted or kinky filling, but is be'employed where filling yarn ofan usual character is employed.

A gixrther object ofthe invention is to provide adjustable means bywhich the vcrtical bight in the running filling may be varied to imposegreater or less tension upon the filling.

A further object of the invention is to provide a threader for loomshuttles having means for producing a vertical bight in the runninfilling and also provided with a substantia ly vertical post of hardmaterial around which the filling is bent abruptly in its passage to thedelivery eye of the shuttle.

These and other objects and features of the invention will more fullyappear from the following description and the accompartly panyingdrawings and willbe particularly pointed out in the claims. preferredembodiment of the invention is lllustrated 1n the accompanying drawing,

in which, $0

l'is a plan view of a shuttle having a threader embodying the presentinvention;

F g. 2 is a rear view of the threader; and,

Fig. 1s a View, partly in elevation and 1n vertical section, showlng inelevation the guide and the holddown under which the filling is guidedfrom the filhng carrier chamber and thence over the tenslon bar and thesubstantially verti cal guide post around which the filling is bent 1nits passage to the delivery eye of the'shuttle.

The shuttle illustrated in the drawing-is of the usual type ofautomatically threading loom shuttles comprising a. body 1 having afilling carrier chamber 2 in which the bobbin or other filling carrier 3is supported in the usual manner. The shuttle body 1 is provided withthe usual longitudinally extendlng channel 4 which provides a passagefor the filling to a side delivery eye 5. The noseor tip of the shuttleis provided with arecess 6 which communicates with a threading slot 7 inthe shuttle body Which leads to the delivery eye 5. A metallic threadingblock or threader 8 is located in the channel 4 and is provided with asuitable longitudinally extending thread passage and guidingmeans fordirecting the filling from the filling carrier through'the eye of theshuttle, this threading block being generally in the usual form exceptfor the modification hereinafter described. which adapts the same to theembodiment of the tension mechanism forming the present invention.

The threader 8 as shown comprises a cast metal block of brass or othersuitable material having a downwardly extending finger 9 which is seatedin a suitable aperture in the shuttle body. The forward portion of thethreader is provided with a head 10, the forward edge 11 of which formsan extension of the wall of the threading slot which leads to'thedelivery eye. The head isprovided with the usual beak 12 which underliesthe shield 13 as is usual in threaders for automatic loom shuttles. Thehead is also provided with a downwardly extending horn 14c whichprojects below the axis of the delivery eye, the filling being carriedare ' erably is integral with the guide 18 which.

. bar 17.

lower end rests upon or is embedded in the wood of the shuttle. Thispost is located at the rear of the axis of the delivery eyeand extendsdownwardly and slightl rearwardly so that it has a tendency to epressthe filling running to the delivery eye. The upper wall of the recess 15desirably is substantially coincidentfwith the periphery of the deliveryeye and may be said to form a continuation of the wall thereof.

The tension device embodying the present invention comprises essentiallya tension member or bar 17 which extends transversely of and preferablycrosses the thread passage in the threader at a distance above andslightly at the rear of the vertical axial plane of the delivery eye sothat the filling which is carried over the tension member or bar is bentabruptly downwardly and thence abruptly laterally about the guiding post16 in its passage to the delivery eye. Means are also provided forbending the filling downwardly between the tension member or bar 17 andchamber of the shuttle so that a substantially vertical bight will beproduced in the filling which will resist .thefrec running of thefilling and with the lateral bending, as it is directed to the deliveryeye, will produce a desired tension upon the filling. The preferredmeans for thus bending the filling downwardly between the transversetension member and the chamber of the shuttle which is illustratedherein comprises'a downwardly curved guide or scroll 18 which may beintegral with orsecured to the wall of the threader. The edge of theguide or scroll 18 is slightly separated from the opposite wall torovide a thread passage through which the filling will automatically bedrawn beneath theguide during the automatic threading of the shuttle.

The forward end of the guide or scroll '18 is provided with a downwardlybent and curved hook 19 which extends from adjacent the lower edge ofthe guide 18 upwardly and curves around adjacent.to the wall of thethreadcr which carries the head 10. The, hold-down hook or guide 19prefdesirably is made of brass or other pliable metal having a permanentset so that the hold-down hook 19 may be bent downwardly or upwardly toincrease or decrease the bight of filling which passes under saidhold-down and thence over the tension member or In the operation of thedevice the shuttle is threaded in the usual manner, either by hand, orautomatically during the first flight across the lay of the loom aftertransfer.

reason of this construction,

In either case the filling as drawn from the filling carrier isautomatically carried downwardlythrough the threading slot 7 beneath thehorn 14 of the threader into the eye of the shuttle. fillin is carrieddownwardly through-the slot etween the guide 18 and the wall of thethreader and rises beneath the guide 18 and consequently under thehold-down hook 19.

The hold-down hook 19 is located below the plane of the transverse baror tension member so that the filling running from the filling carrierpasses beneath the hold-down which acts as a friction device, thenceabruptly upwardl over the transfer bar. thence downward y through therecess 15 in the threader to the shuttle eye. In thus passing to theshuttle eye the filling is bent abruptly around the vertical post 16. Bytherefore, a substantially vertical bight is formed in the filling as itpasses over the transverse bar and an abrupt lateral bend is formed inthe filling as it passes to the delivery eye. These bends, andparticularly the vertical bight, serve to exert a considerable tensionupon the running filling. a

In order, to regulate the tension upon the runnin filling the hold-downhook 19, which is of pliable material, may be bent downwardly toincrease the length of the the transverse bar, or alternatively, the

hold-down hook 19 may be bent upwardly to decrease the length of saidbight and thereby decrease the amount of tension imposed upon thefilling.

It will, of course, be understood that the transverse bar 17 may belocated at any desired distance above the horizontal axis of theshuttle, or the normal lane in which the filling passes from the fi lingcarrier to the delivery eye of 'the shuttle, so that anydesired'vertical bend or bight in the filling may be provided foraccording to the character of the filling which is to be used.

By properly positioning the transverse bar 17 and adjusting thehold-down hook 19 the desired tension for any filling may bereadilywprovided. I

It will be understood that the embodiment of the invention disclosedherein is of an illustrative character and is not restrictive, and thatvarious changes in form, construction and arrangement of parts may bemade within the spirit and scope of the following claims.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is:

1. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a threading slot leading thereto and a longitudinalthread passage communicating withsaid filling carrier chamber and saidslotted eye; a horizontal tension member extending transversely of saidlongitudinal thread passage and guiding means for the filling positionedto hold down the filling fore and aft of said tension member and actingto produce a substantially vertical bight in said filling and thereby toimpose a tension upon the running filling.

2. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a threading slot leading thereto and a longi-'tudinal thread passage communicating with said filling carrier chamberand said slotted eye:- a horizontal tension member crossing saidlongitudinal threadpassage, an automatically threading hold-down guidelocated in said passage below and in proximity to said tension member onthe filling chamber side thereof and automatically threading fillingguiding means located below and in proximity to the delivery eye actingto direct the filling downwardly and bend the same abruptly laterally tothe delivery eye whereby a substantially vertical b-ight and lateralbend will be produced in the running filling which will impose a desiredtension upon the filling.

3. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a threading slot leading thereto and a longitudinalthread passage communicating with said filling carrier chamber and saidslotted eye; a horizontal tension member crossing said thread passage,an automatically threading hold-down guide located in said passage belowand in proximity to said tension member on the filling chamber sidethereof and automatically threading guiding means located below and inproximity to the other side of said tension member acting to direct thefilling downwardly and a post of hard material located adjacent to saiddelivery eye for bending the filling abruptly laterally to the deliveryeye whereby a substantially vertical bight and lateral bend will beproduced in the running filling which will impose a desired tension uponthe filling.

4. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a threading slot leading thereto and a longitudinalthread passage communicating with said filling carrier chamber and saidslotted eye; a horizontal bar crossing said thread passage between saideye and said filling carrier chamber, an automatically threading guidelocated between said bar and said filling carrier chamber having anadjustableself-threading frictionhook located adjacent to'and below saidbar acting to hold down the filling and means, located upon the oppositeside of said transverse bar, for guiding the filling downwardly oversaid bar and directing it laterally 'to the delivery eye.

5. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a. threading slot leading thereto, a longitudinalchannel provided with a threader having a longitudinal thread passagecommunicating with said filling carrier chamber and said slotted eye, ahorizontal bar crossing said thread passage between said delivery eyeand said filling carrier chamber, an automatically threading guideintegral with said threader located between said bar and said fillingcarrier chamber, a pliable self-thread ing friction hook integral withsaid guide located adjacent to and below said bar adapted to be bentdownwardly or upwardly to produce a greater or less bight in the fillingpassing over said bar and means for guiding the filling downwardly andlaterally over said bar to said delivery eye.

6. In a loom shuttle comprising a filling carrier chamber, a sidedelivery eye having a threading slot leading thereto, a longi-" tudinalchannel provided with a threader having a longitudinal thread passagecommunicating with said filling carrier chamber and said slotted eye, ahorizontal bar crossing said thread passage between said delivery eyeand said filling carrier chamber, an automatically threading guideintegral with said threader, located between said bar and said fillingcarrier chamber, a pliable self-threading friction hook integral withsaid guide located adjacent to and below said bar adapted to bebent'downwardly or upwardly to produce a greater or less bight in thefilling passing over said bar and means for guiding the fillingdownwardly and laterally over said bar to said delivery e e includingasubstantially vertical post 0 hard material carried by said threaderlocated in alinement with said delivery eye and about which the fillingis bent abruptly in its passage to the delivery eye.

lntestimo'ny' whereof, I have signed my name to this specification.

'IHQMAS E. NOR

